Considerations for Fire Service Response to
The report is a culmination of a two-year research project examining the characteristics of fires resulting from the overheating of
Mobile energy storage systems are being deployed in jurisdictions around the world, and—as demonstrated by a 2023 New Year's Day mobile energy storage system fire —accidents can happen. We want to make sure communities are prepared for when these systems are deployed in their backyard.
When charging and storing a mobile energy storage system, the requirements are relatively straightforward. The system should be treated as a stationary system as far as the requirements of NFPA 855 go. These requirements will vary based on whether the system is being stored indoors, outdoors, on a rooftop, or in a parking garage. In-transit
An energy storage system contains a large amount of energy stored in a small space, which may make it the target for those who look to cause harm. For this reason, a deployed mobile energy storage system is required to be provided with a fence with a locked gate that keeps the public at least 5 ft (1.5 m) away from the ESS.
Additional limitations for where a mobile energy storage system can be deployed include a 10 ft (3 m) limitation on how close it can be to various exposures and a 50 ft (15.3 m) limitation on how close it can be to specific structures with an occupant load of 30 or greater.
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